Matt Damon has officially gone on strike from using the toilet -- and he wants his fans to do the same! "The Promised Land" actor, 42, hosted a faux press conference in a new viral video PSA that reveals his decision to boycott the toilet.

"Anybody have any idea what invention has saved more lives than any other in the history of humankind? The toilet," the Water.org co-founder tells reporters in the video campaign. "What's even more shocking is the catastrophic worldwide lack of clean water and sanitation. 780 million people -- that's twice the population of the United States -- lack access to clean water. 2.5 billion people lack access to a toilet or basic sanitation. I mean, more people have cellphones than have toilets."